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To: gentoo-user@lists.gentoo.org
From: Nikos Chantziaras <realnc@arcor.de>
Subject: [gentoo-user] Re: linux-headers-2.6.38
Date: Thu, 11 Aug 2011 03:50:17 +0300
Organization: Lucas Barks
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References: <CAA2qdGWm7Cu7_NYAhPpUXFS5yR+DTKk5=15RgTfC8qLHSYqQnA@mail.gmail.com> <86aabhh12r.fsf@jane.chrekh.se>
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On 08/10/2011 04:02 PM, che@chrekh.se wrote:
> Pandu Poluan<pandu@poluan.info>  writes:
>
>> While I'm about to do an `emerge -e @world` ...
>>
>> Should I `emerge -av "=sys-kernel/linux-headers-2.6.38" ` ?
>>
>> Any benefits over the current "sys-kernel/linux-headers-2.6.36.1" ?
>
> There is at least a theoretical benifit if you set NPTL_KERN_VER=2.6.38
> in make.conf and recompile glibc. That way glibc could use things not
> present in older kernels.
>
> I haven't researched if there are any such things, perhaps someone else
> knows.

glibc will use things in newer kernels anyway.  You don't need to use 
NPTL_KERN_VER=2.6.38 in order for glibc to use 2.6.38 features; it will 
do that by default.  NPTL_KERN_VER only omits fallbacks for older 
kernels.  It's there to reduce the size of glibc.  The size difference 
is very small though.